Testing A 80
Testing A 80
Hi All
I've been doing a bit of decorating and carefully took my system apart and put it back together again. When I fired it up there was an awful screech so I quickly turned off and rechecked my connections. It seemed that a positive speaker lead to one of the A80 units was a bit loose so I pushed back in and all was fine. Today I had some hum when playing vinyl so investigated and checked all leads were secure and the hum reduced but on turning on later I got the screech from the same A80. I turned off but the leads seemed secure. So am seeking advice before messing about.
Is there any way to check if there is a fault in the unit without damaging anything?
The screech is very loud and not good for the nerves so any advice will be welcome
I've been doing a bit of decorating and carefully took my system apart and put it back together again. When I fired it up there was an awful screech so I quickly turned off and rechecked my connections. It seemed that a positive speaker lead to one of the A80 units was a bit loose so I pushed back in and all was fine. Today I had some hum when playing vinyl so investigated and checked all leads were secure and the hum reduced but on turning on later I got the screech from the same A80. I turned off but the leads seemed secure. So am seeking advice before messing about.
Is there any way to check if there is a fault in the unit without damaging anything?
The screech is very loud and not good for the nerves so any advice will be welcome
- Fretless
- Posts: 9327
- Joined: Wed Nov 12, 2014 12:15 pm
- Location: Somewhere in Holland
- Has thanked: 1514 times
- Been thanked: 2308 times
Re: Testing A 80
Look at the interconnects - I had this with my A40's when the cats had buggered my SSP mk1 leads.
Hope the Doc is along soon
Hope the Doc is along soon
Upstairs:
VinylPro-Ject 1.2 + Grado Sig Jr + Cambridge Alva Duo
DigiVolumio PC + Kiss DP-500 + Sabaj A20d
NVA: Cube2 - SSP - LS6+ Sabaj A10a {x2)
Little Bear MC2 + AQ NightHawk
Downstairs:
VinylLogic DM101 + Syrinx LE1 + Grado Sig MCX
DigiDenafrips Ares II + Volumio PC + Cambridge CXC
NVA: P50 & PSU - BMUAiyima A07 MAX + Arcam One
HP: Allo DigiOne + Sabaj A10d + AQ NightOwl
Office: Allo DigiOne SIG + SMSL M300se + Douk G4 (x2)
Mission 760 + Monolith 887 + German Maestro GMP 450
-
- Posts: 8586
- Joined: Thu Jul 12, 2012 7:16 am
- Has thanked: 24 times
- Been thanked: 399 times
Re: Testing A 80
yes check for a loose ground wire on your interconnects .
swap interconnects and use the other a80 . if the are okay the fault lies with the amp .
swap interconnects and use the other a80 . if the are okay the fault lies with the amp .
- Dr Bunsen Honeydew
- Posts: 30758
- Joined: Wed Jul 11, 2012 7:26 pm
- Location: Muppet Labs
- Has thanked: 0
- Been thanked: 48 times
Re: Testing A 80
It is an intermittent earth connection either in the interconnect cable or in the amp.
-
- Posts: 8586
- Joined: Thu Jul 12, 2012 7:16 am
- Has thanked: 24 times
- Been thanked: 399 times
Re: Testing A 80
if you have got any cheap generic moulded ones , use them as substitute as it helps to narrow it down and saves you unplugging and replugging the NVA ones
Re: Testing A 80
Don't have any other interconnects but I removed the suspect one and fiddled about with my multimeter and when I wiggle the wire I get a break in continuity. Not 100% sure as I would need three hands to hold the probes tightly and wiggle the wire.
Is there a way to take apart the plug to get a proper look?
Is there a way to take apart the plug to get a proper look?
- Dr Bunsen Honeydew
- Posts: 30758
- Joined: Wed Jul 11, 2012 7:26 pm
- Location: Muppet Labs
- Has thanked: 0
- Been thanked: 48 times
Re: Testing A 80
Depends on which model and how much heatshrink on it, can you give us a pic. The best bet is order a set of soundcord if you need a cable or pop to your local Maplin and get as cheap as poss. If everything then works send back the nva cable for repair.
- Dr Bunsen Honeydew
- Posts: 30758
- Joined: Wed Jul 11, 2012 7:26 pm
- Location: Muppet Labs
- Has thanked: 0
- Been thanked: 48 times
Re: Testing A 80
Enclose a note with full details, again I am still receiving returns with no note. I really do not understand what people expect from me.